mirror of https://github.com/icsharpcode/ILSpy.git
Siegfried Pammer
10 years ago
14 changed files with 633 additions and 67 deletions
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// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
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// software and associated documentation files (the "Software"), to deal in the Software
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// without restriction, including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
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// to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or
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// substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System; |
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using System.Linq; |
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namespace ICSharpCode.Decompiler.IL |
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{ |
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/// <summary>
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/// Description of SwitchInstruction.
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/// </summary>
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partial class SwitchInstruction |
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{ |
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public SwitchInstruction(ILInstruction value) |
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: base(OpCode.SwitchInstruction) |
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{ |
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this.Value = value; |
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this.Sections = new InstructionCollection<SwitchSection>(this, 1); |
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} |
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ILInstruction value; |
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public ILInstruction Value { |
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get { return this.value; } |
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set { |
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ValidateChild(value); |
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SetChildInstruction(ref this.value, value, 0); |
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} |
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} |
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public readonly InstructionCollection<SwitchSection> Sections; |
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internal override ILInstruction Inline(InstructionFlags flagsBefore, IInlineContext context) |
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{ |
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Value = value.Inline(flagsBefore, context); |
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return this; |
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} |
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protected override InstructionFlags ComputeFlags() |
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{ |
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var sectionFlags = InstructionFlags.None; |
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foreach (var section in Sections) { |
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sectionFlags = IfInstruction.CombineFlags(sectionFlags, section.Flags); |
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} |
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return value.Flags | sectionFlags; |
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} |
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public override void WriteTo(ITextOutput output) |
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{ |
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output.Write("switch ("); |
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value.WriteTo(output); |
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output.WriteLine(") {"); |
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output.Indent(); |
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foreach (var section in this.Sections) { |
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section.WriteTo(output); |
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output.WriteLine(); |
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} |
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output.Unindent(); |
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output.Write('}'); |
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} |
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protected override int GetChildCount() |
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{ |
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return 1 + Sections.Count; |
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} |
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protected override ILInstruction GetChild(int index) |
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{ |
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if (index == 0) |
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return value; |
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return Sections[index - 1]; |
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} |
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protected override void SetChild(int index, ILInstruction value) |
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{ |
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if (index == 0) |
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Value = value; |
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else |
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Sections[index - 1] = (SwitchSection)value; |
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} |
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internal override void TransformStackIntoVariables(TransformStackIntoVariablesState state) |
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{ |
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Value.TransformStackIntoVariables(state); |
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var stateAfterExpression = state.Variables.Clone(); |
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for (int i = 0; i < Sections.Count; i++) { |
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state.Variables = stateAfterExpression.Clone(); |
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Sections[i] = (SwitchSection)Sections[i].Inline(InstructionFlags.None, state); |
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Sections[i].TransformStackIntoVariables(state); |
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if (!Sections[i].HasFlag(InstructionFlags.EndPointUnreachable)) { |
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state.MergeVariables(state.Variables, stateAfterExpression); |
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} |
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} |
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state.Variables = stateAfterExpression; |
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} |
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public override ILInstruction Clone() |
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{ |
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var clone = new SwitchInstruction(value.Clone()); |
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clone.ILRange = this.ILRange; |
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clone.Value = value.Clone(); |
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clone.Sections.AddRange(this.Sections.Select(h => (SwitchSection)h.Clone())); |
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return clone; |
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} |
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} |
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partial class SwitchSection |
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{ |
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public SwitchSection() |
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: base(OpCode.SwitchSection) |
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{ |
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} |
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public LongSet Labels { get; set; } |
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internal override ILInstruction Inline(InstructionFlags flagsBefore, IInlineContext context) |
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{ |
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// Inlining into switch sections would be madness.
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// To keep phase-1 execution semantics consistent with inlining, there's a
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// phase-1-boundary around every switch section.
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return this; |
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} |
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protected override InstructionFlags ComputeFlags() |
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{ |
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return Block.Phase1Boundary(body.Flags); |
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} |
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public override void WriteTo(ITextOutput output) |
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{ |
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output.Write("case "); |
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output.Write(Labels.ToString()); |
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output.Write(": "); |
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body.WriteTo(output); |
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} |
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internal override void TransformStackIntoVariables(TransformStackIntoVariablesState state) |
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{ |
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body.TransformStackIntoVariables(state); |
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} |
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} |
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} |
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@ -0,0 +1,101 @@
@@ -0,0 +1,101 @@
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
|
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// software and associated documentation files (the "Software"), to deal in the Software
|
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// without restriction, including without limitation the rights to use, copy, modify, merge,
|
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
|
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// to whom the Software is furnished to do so, subject to the following conditions:
|
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//
|
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// The above copyright notice and this permission notice shall be included in all copies or
|
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// substantial portions of the Software.
|
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//
|
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
|
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
|
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
|
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System; |
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public static class Switch |
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{ |
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public static void Main() |
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{ |
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string[] args = { "First case", "Else" }; |
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TestCase(ShortSwitchOverString, args); |
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} |
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static void TestCase(Func<string, string> target, params string[] args) |
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{ |
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foreach (var arg in args) { |
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Console.WriteLine(target(arg)); |
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} |
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} |
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public static string ShortSwitchOverString(string text) |
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{ |
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switch (text) { |
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case "First case": |
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return "Text"; |
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default: |
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return "Default"; |
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} |
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} |
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public static string SwitchOverString1(string text) |
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{ |
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switch (text) { |
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case "First case": |
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return "Text1"; |
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case "Second case": |
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case "2nd case": |
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return "Text2"; |
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case "Third case": |
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return "Text3"; |
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case "Fourth case": |
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return "Text4"; |
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case "Fifth case": |
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return "Text5"; |
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case "Sixth case": |
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return "Text6"; |
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case null: |
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return null; |
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default: |
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return "Default"; |
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} |
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} |
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public static string SwitchOverString2() |
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{ |
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switch (Environment.UserName) { |
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case "First case": |
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return "Text1"; |
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case "Second case": |
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return "Text2"; |
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case "Third case": |
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return "Text3"; |
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case "Fourth case": |
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return "Text4"; |
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case "Fifth case": |
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return "Text5"; |
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case "Sixth case": |
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return "Text6"; |
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default: |
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return "Default"; |
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} |
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} |
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public static string SwitchOverBool(bool b) |
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{ |
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switch (b) { |
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case true: |
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return bool.TrueString; |
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case false: |
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return bool.FalseString; |
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default: |
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return null; |
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} |
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} |
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} |
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